Cost Analysis of Energy Storage Systems Participating in Peak Shaving and Frequency Regulation Auxiliary Services

In the context of large-scale new energy resources being connected to the power grid, the participation of energy storage in the power auxiliary service market can effectively improve the safety and stability of power grid operation. In order to quantitatively analyze the cost of energy storage participating in the power auxiliary service market, this paper uses the life cycle cost theory to quantitatively model the cost of energy storage participating in the power auxiliary service market. Then, the life cycle cost driver of energy storage is analyzed through the cost disturbance factor analysis model, and the influence degree of each cost factor on the life cycle cost is obtained. Finally, a practical example is given to verify that the proposed method can effectively estimate the cost of energy storage participating in the auxiliary service market and analyze the disturbance factors of cost changes, which can provide a reference for the subsequent proposal of the trading mechanism of energy storage participating in the auxiliary service.